SU1243103A1 - Pulser - Google Patents

Abstract

The invention can be used to build impulse mix generators. The purpose of the invention is to extend the functionality. This is achieved by shaping the output sequence with a variable pulse duration while increasing the reliability of the generator. The device contains an operational amplifier 1, a capacitor 2, resistors 3 and 4, resistive dividers 5 and 6 voltage, diodes 7 and 8, synchronization buses 13 and 14. To achieve this goal, diodes 9 and 10, thyristor 11 and zener diode are added to the device 12, which ensures the formation of a mixture of pulses of two frequencies on the basis of a single pulse generator. The operation of the device is illustrated by timing diagrams. 2 Il. F (L to 4 00 00

Description

I

The invention relates to a pulse technique and can be used in the construction of a mixture of pulse generators.

The aim of the invention is to extend the functionality by allowing the output sequence to be formed with a varying pulse duration while increasing the reliability of operation.

, FIG. 1 is a circuit diagram of a device j in FIG. 2, diagrams explaining the operation of the device.

The device contains an operational amplifier 1J whose inverting input is connected via a capacitor 2 to the common bus of the device, through the first resistor 3 rd out of it, which is connected to the first: the output of the second resistor 4, the first voltage divider 5, the output of which is connected to the non-inverted the input of the operational amplifier 15 is the second voltage divider 6, the first and second diodes 7 and 8, the third and fourth diodes 9 and Yu, the thyristor 115 zener diode 12, the first and second buses 13 and 14 synchronization, the input of the first voltage divider 5 is connected through iodo 7 with output of the operational

the amplifier 15 whose non-inverting input is connected via the second diode 8 to the first synchronization bus 13, through the third diode 9 to the second synchronization bus 14, which is connected to the control input of the thyristor 11 connected between the common device bus and the second output of the second resistor 4, connected through a zener diode 12 with an inverting input of an operational amplifier 15 which is connected through the fourth diode 10 to the output of the second voltage divider 6, the input of which is connected to the pi bus. tani.

The device works as follows: this way.

In the absence of triggering (synchronizing) pulses (Figs. 2a, 5), a DC voltage is present at the output of the generator, since diode 10 fixes the voltage on the capacitor 2 and the inverting input of operational amplifier 1 at a level greater than (in absolute value) -

left potential applied to a non-fluxed amplifier 1.

The generator 1pul11sov is fed to the generator (Fig. 2a) at the time of arrival of a frequency pulse f, the generator is started, after which a pulse is generated on the generator (.22 is a short pulse), the specified duration of which is proportional to the capacitance of the capacitor 2 and the resistor connected in parallel 3 and 4. In this case, the Zener diode 12 is included in the forward direction -.

Lenia, r about, works as a diode.

At the time of the end of the formation of a pulse (its trailing edge), the output voltage on the amplifier changes polarity, the zener diode pierces

sator

reload through same

 7.5

time resistors. With the arrival on the generator of a pulse of frequency f (figch, 25) the generator restarts

At the same time, the switch 1 1. The modular voltage on the connected thyristor 11 is set at a level 5 close to zero potential (Fig. 2b). The zener diode is closed, and the charge current of the capacitor 2 is supplied only through resistor 3. The thyristor opens after removing the triggering frequency pulse; maintained by the holding current received from the output of the amplified power. At the time of the falling edge of the current pulse, the polarity of the output voltage of the amplifier changes and the thyristor is locked. The capacitor is discharged through the same circuits as in the formation of short pulses.

When the generator starts with pulses of different frequencies, the cycles of formation of the output signals are identical to those described. Thus, a mixture of pulses of two frequencies is formed on the basis of one generator.

Claims (1)

Invention Formula Pulse generator, containing an operational amplifier, which inverts - or whose input is connected via capacitor with a common bus device, through the first resistor - with an output that is connected to the first 3 the output of the second resistor, the first voltage divider, the output of which is connected to a non-inverting input - an operational amplifier, the second voltage divider, the first and second diodes, characterized in that, in order to extend the functionality by allowing the formation of an output sequence with a variable pulse duration while increasing the reliability of operation, the third and fourth diodes, a thyristor and a zener diode are introduced into it, and the input of the first voltage divider 034 connected via the first diode to the output of the operational amplifier, the non-inverting input of which is connected via the second diode to the first synchronization bus, through the third diode to the second synchronization bus and to the equalizer of the thyristor connected between the common bus of the device and the second output second resistor which is connected via a Zener diode to an inverting input of an operational amplifier, which is connected via a fourth diode to an output of a second voltage, whose input connected to the power supply bus. FIG. g Editor L. Gratilllo Make up A. Gorbachev Tehred O. Sopko Proofreader S. Shekmar 3716/55 Circulation 816 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4